Dell POWEREDGE R710 Series - Page 30

Dell™ PowerEdge™ R710 Technical Guidebook
30
Intel Direct Media Interface (DMI)
The DMI (previously called the Enterprise Southbridge Interface) connects the Tylersburg IOH with the
Intel I/O Controller Hub (ICH). The DMI is equivalent to a x4 PCIe Gen1 link with a transfer rate of 1 Gb/s
in each direction.
PCI Express Generation 2
PCI Express is a serial point-to-point interconnect for I/O devices. PCIe Gen2 doubles the signaling bit
rate of each lane from 2.5 Gb/s to 5 Gb/s. Each of the PCIe Gen2 ports are backwards-compatible with
Gen1 transfer rates.
In the Tylersburg-36D IOH, there are two x2 PCIe Gen2 ports (1Gb/s) and eight x4 PCIe Gen2 ports (2
Gb/s). The x2 ports can be combined as a x4 link; however, this x4 link cannot be combined with any of
the other x4 ports. Two neighboring x4 ports can be combined as a x8 link, and both resulting x8 links
can combine to form a x16 link.
Intel I/O Controller Hub 9 (ICH9)
ICH9isahighlyintegratedI/Ocontroller,supportingthefollowingfunctions:
 •Sixx1PCIeGen1ports,withthecapabilityofcombiningports1-4asax4link
  •TheseportsareunusedonthePowerEdgeR710
 •PCIBus32-bitInterfaceRev2.3runningat33MHz
 •UptosixSerialATA(SATA)portswithtransferratesupto300MB/s
  • The PowerEdge R710 features two SATA port for optional internal optical drive or tape backup
 •SixUHCIandtwoEHCI(High-Speed2.0)USBhostcontrollers,withuptotwelveUSBports
  • The PowerEdge R710 has eight external USB ports and two internal ports dedicated for UIPS.
Refer to the 11th generation of PowerEdge servers Hardware/BIOS Specification for the USB
assignments for each platform
 •Powermanagementinterface(ACPI3.0bcompliant)
 •PlatformEnvironmentalControlInterface(PECI)
 •IntelDynamicPowerModeManager
 •I/Ointerruptcontroller
 •SMBus2.0controller
 •LowPinCount(LPC)interfacetoSuperI/O,TrustedPlatformModule(TPM),andSuperVU
 •SerialPeripheralInterface(SPI)supportforuptotwodevices
  •ThePowerEdgeR710’sBIOSisconnectedtotheICHusingSPI